Kingdom Animalia Linnaeus, 1758 - animals Phylum Porifera Grant, 1836 - sponges Class Demospongiae Sollas, 1885 - demosponges Order Verongida Bergquist, 1978 1 Family Aplysinellidae Bergquist, 1980 2 Family Aplysinidae Carter, 1875 3 Family Ianthellidae Hyatt, 1875 4 Family Pseudoceratinidae Carter, 1885 [monotypic]